Baidu Migration Big Data

Baidu Migration Big Data provides indices of migration scale (including an in-migration scale index and an out-migration scale index) recorded in days for 369 cities(4 municipalities directly under the central government, 2 special administrative regions, 293 prefecture-level cities, 7 prefectures, 30 autonomous prefectures, 3 leagues, 29 county-level administrative units directly managed by the province, and Taiwan Province) in China and the percentage of in-migration from a particular city to the total in-migration from that city for each city's in-migration sources. The migration scale index reflects the size of a city's in-migration or out-migration populations and allows for cross-city comparisons. PM_ij is the index of spatial connection of population migration between city i and city j.

百度迁移大数据（Baidu Migration Big Data）为中国369座城市（含4个直辖市、2个特别行政区、293个地级市、7个地区、30个自治州、3个盟、29个省直辖县级行政单位以及台湾省）提供逐日统计的迁移规模指数（包含迁入规模指数与迁出规模指数），同时覆盖各城市的迁入来源数据：即来自某一特定城市的迁入人口占该城市总迁入人口的比例。迁移规模指数可反映一座城市的迁入或迁出人口规模，且支持跨城市横向比较。PM_ij 为城市i与城市j之间的人口迁移空间联系指数。

搜集汇总

背景与挑战

背景概述

Baidu Migration Big Data是一个中国城市人口迁移数据集，包含369个城市每日的迁入/迁出规模指数和城市间迁移连接指数，覆盖多种行政级别城市，适用于人口流动比较研究。